1 definition by abcdefghijklmnopqrstuvwxyz!!

way of saying, 'fuck your mother' without actually saying 'fuck your mother'.

also see: your mom and fuck

also used as verb; (fucking your mother)
Person 1: You're a whore who stands on corners in revealing clothing just looking for someone to fuck because you're so damn desperate.

Person 2: Oh, FYM

Random person: OHHHHHHHH.
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